Sliding window



Sept. 17, 1929. E. A. HELLSTRAND SLIDING WINDOW Filed March 5, 1928 Patented Sept. 17, 1929 UNITED STATES EDWARD AXELSON HELLSTRAND, OF GUILDFORD, 'ENGLAND' SLIDING WINDOW Application filed March 3, 1928, Serial No. 258,797, and in Great Britain March'121927.

This invention relates to vertically or hori- Zontally sliding windows for use in connection with passenger transport and such as are used on vehicles, either single windows 5 or two (or more than two) windows which slide alongside one another with a :tewinches of overlap to prevent the passage ott draughts. Usually such windows slide horizontally, but in some cases vertically sliding rl windows oit this kind are employed. The inf plan and sectional elevation r-espectively,y

showing an alternative locking device in position for slightlyr modified channels,

Figures and 6, in section and elevation respectively, show alternative forms of channelling with a locking device as in Figures 1 and 2, and

Figures 7 and 8, in section and plan respectively, show still further niodiiied chan?"y nels and also a modiiied form of the locking device as shown in Figures 3 and 4:.

In the method illustrated by Figures 1 and 2, for two windows which slide over one another, the fixed or main channel 2 has sides 3 which for a certain distance iromrthe base are parallel and thereafter converge as at it forming a section usually termedv underout7 (i. e., wider at the hase than the mouth). Within this channel are slidahly mounted two separate channels 5 `and 6 attached respectively to the two windows 7 and 8, and they have vertical sides 9 which abut in the centre of the main channel, and

also converging sides 10 which iit the sides 4; oi the main channel. formed initially to he somewhat higher than the sides ot the mainchannel, and thereafter These sides 10 are are 'folded as at 11 to engage the sides oi the main channel. f

yThe channels 5 and 6 are lined with resilient material 12, such as felt or yruhhe'r or cork, which does not harden norperish, and this lining is so thickened at the hase oeaclr kchannel asy to provide a substantially parallel sided groove for the reception of the windows `7 and 8. kThe bases 13 of these two channels are at a height above the base 14 of themain 'channel corresponding to the height ot the latters parallel sidesy 3.r Into the space between these bases extends transverse ly of the channel a bar 15, whose underside is shaped to yiormtwo wedges 16, one under each of the `channels 5 and 6.7" These wedges engage corresponding surfaces 17 onk the hase of the main channel, so that as the har is moved across the main i channel its upper face is pressed against 'the `bases of the two channels forcing them outwardly of the' main channel, and, owing to the latters 'y inwardly converging sides, setting up a jamming actionupon themwhich eiiectually prevents their accidental movement, yor rattle, whilst the resilient lining 1Q prevents any ydestructive effect on the windowy glass.

To operate the harj15,one end 18 projects to the inner side of the vehicle and is screw-threaded to'carry ay clamping nut 19 which bears against the side of the main chalnnel or against ythe face of the vehicle rai 20.

the vehicle side without obstruction.

*Iny an alternative (Figures 5` and 6) in` which the sliding edge of' each. window is protected by a strip 22 of extruded metal whichat its lower edge'is of T-section ex-` ternally, the inner sides 23 oiE the main channel 24, also formed of extruded metal, are undercut to iit ythestrips 22Q To provide, therefore, for the wedger member, vay transyverse cut 25 is made in the base of the chan' Alternatively, operation of the wedge bar 'can heeffected hy a lever-operated nel and for the width of this cut the base of the channel is removed (see Figure 6). In this cut-away portion the Wedge bar 15 is slidable, and over it is a. plate 26 which is secured to the main channel and has formed in it the co-acting Wedge surfaces 17. @peration et the bar 15 applies a thrust to the strip 22 on the Window causing it to be pressed against the upper portion oi the main channel Where the sides extend inwardly to form the T-section.

As a further alternative, each channel and 6 (Figures l and 2) may be xed end- Wise in the main channel and be su'f'iiciently flono' to form the guide for a plain plate glass or the like Window `e. one devoid of framework), The glass is :then adapted to slide between the feit or other lining l2, (and, by making'theV sides of the inner channel flexible, the Wedge action set lup lby the sides of the main vchannel when the locking device lis operated will cause the flexible sides of the inner channel to press upon the lining l2 and thus upon the glass Winden7 thereby secmfelyv gripping it, but Without risk of subjecting it to destructive stress. rlhis action may be assisted by in- ;clining the. sides (of the main channel less steeply than the adjacent sid-es of the glassengaging `channel las illustrated in Figure el.

A'quiclr and neat method of operating the Wedge bar is by a lever-operated eccentric, and this is illustrated in Figures 7 and 8. Here wedge bar 1,5, constructed as in the previous figures, is moved eitherr inwardly .or .outwardly of the I nain channel'by an leccentric reduced portion or ,oiiset pin 27 1on the shaft 28 engaging ya transversely elongated slet 29 in the bar l5 so that .movement ,of an actuating lever 3,0 fast With the shaft 28 to the eXtreme positions (as indicated by .the arrows) respectively, causes the slidable channels either to be gripped or freed. The sides of the ymain Achannel 2 and ot the lchannels 5 and 6 in this construction do not converge towards the moutl as in Figures l and 2 but in leiiect form a modification of those inFigures 5 and 6, all the channels being made from sheet metal.

The main channel 2 has its vertical sides 81 parallel, .and near the top these are bent inwardly and then upwardly to forni step 32 against which the slidable channels 5 and .6 et corresponding section and ycarrying the Windows 7' and ,8 are pressed by the Wedge bar. The Space so left by the formation of the corresponding lsteps in the slidable channels is lled with resilient material l2 ,adapted to bear `en the engaged edges of the Windows.

Vhat I claim as my invention and desire to secure by Letters Patent of the United .States is l, In a sliding Window for a vehicle, the combination of a main fixed channel having undercut sides, a separately formed channel therein having sides Which correspond with those of said main channel, and a` device which is adjustable across the channels adapted to exert a thrust between their bases whereby their respective sides are caused to grip one another, substantially as set forth.

2. `Window channels according to claim l, formed of strip metal bent `to shape, the inner channel havino' its outwardly situated edges folded ovei` to engage those of the main channel, and also having vertical inner sides which abut one another, substantially as set forth.

ln testimony Whereoi1 l have signed my name to this speciication.

EDWARD AXELSON HELLSRliND.

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